Discount Calculator
Discount calculator: the price after a percentage off, the original price before the discount, the discount between two prices and successive discounts.
What it does
Four ways to work out a discount, each in its own box. The first gives the price after a percentage off. The second goes backwards: from the price you paid to the price before the discount, which is not the same as adding the percentage back. The third finds the percentage between two prices, and the fourth combines two discounts in a row, as in an extra 10% off a product that is already 20% off.
How to use it
- Pick the box that matches your question.
- Type the prices and percentages; the answer updates as you type.
- Read the final price and how much you save.
The arithmetic runs in your browser. Nothing you type is sent anywhere and nothing is stored, so you can use these with real numbers.
Frequently asked questions
Are 20% and then 10% off the same as 30% off?
No. The second discount is applied to the price that has already been reduced, so 20% and then 10% add up to 28%. On 100, the first discount takes it to 80 and the second takes 10% of 80, giving 72. The order of the two discounts does not change the result.
How do I find the original price from the discounted price?
Divide the price you paid by what was left after the discount. If you paid 60 with 25% off, you paid 75% of the price, so the original was 60 ÷ 0.75 = 80. Adding 25% to 60 gives 75, which is wrong, because the 25% was taken from the original price and not from 60.
How do I calculate the percentage of a discount?
Divide the amount saved by the original price and multiply by 100. From 80 down to 60 you save 20, and 20 ÷ 80 = 25%.
Is a markup the same as a discount in reverse?
Not with the same percentage. Adding 25% to 80 gives 100, but taking 25% off 100 gives 75. To undo a 25% markup you need a discount of 20%.